Closure-securing device



Se t. 2 1

p 7 927- w. E. H. BELL CLOSURE SECURING DEVICE original Fil'ed Ney. 2o. 1924 Unt ATTORNEYS.

Patented Sept. 27, 1927.

UNITED STATES PATENT OFFICE.

`WIILLIA'M E. H. BELL, YOF GLENSIDE, PENNSYLVNIA, ASSI'GNOR, BY MESNE ASSIGN- MnNTsron. W. BUTTERWORTH a sons COMPANY.

CLOSUBE-SECUBING DEVICE.

Original application ledNovember 20, 1924, Serial No. 750,985. Divide/d and lthis application led VJune y1, 1925. Serial No. 34,005.

VThis invention relatesto improvements in locking or similar .securing mechanisms, :and morefparticularly in some of .its details to improvements in plural bolt vlocking mechanisms .particularly adapted for `.securingun closed position the closures vof receivers for dyeing machines `or the like. l

It is a general Vobj'ectof 4the invention .to provide an improved Lor .perfected 'locking lo mechanism of the class mentioned which is simple in nature andsusceptible ofeasy operation Afor locking closures Sor the like firmly in closed position. v v Y A more particular object is -to provide an L improved locking mechanism. ofY the class mentioned With a simple durable and satisfactory securing arrangement, operating automatically .for locking or securing the lock in locked position.

Another object is to providean improved plural bolt locking mechanism for closures, vbeing adapted` to support closures in closed .position at :a plurality of points, preventing springing of theclosure -away from the jan-1b and being simultaneously operable `by an .im-

proved mechanism `automatically held vin locking position. l

Other .objects will be 'in part obvious in connection With the following 'detaileddescription and in part pointed out therein. 'Il

The invention 'accordingly .comprises the features of construction, combinations of elements, `and arrangement vof parts, which .Will bc exemplified .in the construction herel inafterset forth and the .scope/of the application of which -Will be indicated in `t-he claims. f For amore complete disclosure of the nature and objects of the'invention, reference is made to the following detailed description and to the accompanying drawings disclosvinga preferred embodiment ofthe invention, and in whichV 1F igure 1 isa plan view of a lock-ing mechanismembodying ythe invention as applied to a .tank or'receiver drum for-dyeing machines or .the like; Y.

Fig. .2-'is a'section taken rapproxima-tel-y `on theline 2 2 of Fig. 1; and

Fig. 3 is a detailed section on the line 50 3--3 Aof Fig. l. y

The subject-matter of this application is disclosed in applicants prior application for locking mechanism, Serial No. 7 50,985, filed November 20, 1924. This application is therefore a Vdivision of said prior applicaT tion.

Referring to the drawing for al detailed description of the illustrative embodiment of the :invention there shown, a fragment 'of 60 a metallic cylindrical tank or receiver is shown 'at l0 being fitted With a closure or ldoor -ll hinged at 12 to close an opening leading through the Walls-of 'the' tank. The door is preferably metallic and formed With 35 rmarginal ribs v18 extending along the longitudinal edges of the door. Transverse stiffening ribs Vlet 'may also be provided intermediate the marginal ribs 13. The tank Walls .are preferably reinforced at the margins of 'm .the opening With metallic angle bars or 'similar metallic members forming door jambs 15 having inclined faces cooperating with complementary inclined faces on the door edges so the doors may be forced into posi- 4tion to form.- a tight Wedging joint Withthe jamb.

The loc-k -in the -embodiment shown is of kthe plural bolt type having operating mechanism Which may be `housed .and protected in 80 a suitable manner being preferably positioned in a cavity 16 formed between members of Ithe supporting frame. The bolts 173 18 and 19 are supported for sliding longitudinal movement, extendingV from the operating mechanism to Idifferent edges of the closure. Bolts 17 and 18 are Vsupported in lugs 20 disposed toward their inner ends and in the frame members 18 and 14 aty their outer or locking ends in openings formed in integral bosses 21 formed in the door frame members. The thi-rd boltV 19 due to its shorter length lis. supported principally at its outer end in' an integral boss 22 formed in the door frame 13.` Bosses 23 are also formed 95 in `the'jamb members 15, having openings for registry with the bolts When the closure is in closed position so the closure is wedged and locked firmly in closed position when the bolts are projected.

rlhe supporting frame for the lock carries a centrally disposed stud 2e upon which is rotatably mounted a bolt operating or shifter plate 25 having an operating handle 26 extending to an accessible position for conven` ient manual operation of the plate. A lug 27 is provided for each locking bolt being preferably in the form of pins or bolts mounted in circumferentially spaced positions on the shifter plate and having bearing surfaces or rollers projecting respectively into elongated slots 28 formed in transverse heads or lugs 29 disposed transversely ofthe longitudinal axes of the bolts, and preferably integral therewith. rlhe slot of each lug 29 extends longitudinally thereof and is preferably disposed .substantially at right angles to the longitudinal axes of the bolts.

For holding the shifter plate 25 either in bolt projecting position or bolt retracting position, a locking plate 30 of spring metal is secured to the closure having lugs '31 projecting from the upper face thereof for cooperationk with a lug 32 in the underside of the handle 26. The lugs 3l are formed at their outer faces with abrupt abutment-s for cooperation with the lug 32 but are inclined on their inner face so the lug 32 may slide thereover forcing the spring plate downwardly as the handle 26 is moved in one direction or another'. Vhen it is desired to unlock the shifter plate from the position shown in Fig. l, the spring plate is pressed downwardly moving the lug 3l from engagement with lug 32 whereupon thefhandle may be swung to the right, as viewed in Fig. l, to retract the locking bolts.

The operation of the improved mechanism which is set forth to some extent in the foregoing description may be summarized as folfows.V Assuming the bolts to be projected in locking position as in Fig. 1, the locking bolts are locked in this position by engagement of the lug 32 with the lug 3l of the spring locking plate as mentioned above. When in this'position it will be noted that the lines of movement of the locking bolts extending through the contact pointof the pin 27 with the slot 28 coincide with and are in parallelism with the radii of the shifter late passing through said pins. Also the slots 28, at the points of contact with the pins, are disposed substantially at right angles with the lines of movement of the bolts. By means of this relation, there is vno tendency to rotate the shifter plate 25 from locking position by inward endwise thrust upon the locking bolts. Or in other words, the operating mechanism is irreversible when in locking position by endwise thrust -upon the bolts themselves thereby avoiding the tendency to rotate the shifter plate and relievingthe locking lugs 3l, 32 from stresses and wear.

Vhen it is desired to retract the bolts to unlocked position, the spring locking plate 30 is depressed so as to permit rotation of the shifter vplate to move all the bolts inwardly simultaneously. As the handle is swung to the right in Fig. l, the locking lug 32 engages the inclined surface of Athe` 4opposite lug 3l thereby depressing the spring and automatically locking the shifter plate, and throughsaid shifter plate, locking the bolts in unlocked or retracted position. Similar automatic locking lengagement takes place when the handle 26 is swung from right to left to lock theshifter plate in t-he position shown in Fig. l.

Since certain changes maybe made lin the above construction and different embodi-` ments of Athe invention could be made without departing from `the scope thereof, it is intended that vall matter contained in the above description or shown in the accom-V panyingrlrawing shall be vinterpretedas illustrative and not in a limiting sense.

It is also to be understood that the following claimsv are intended to cover all of the genericl and specic features ofthe invention herein described, and all statments of the scope of the invention, which, as a matterA of language, might be said to fall therebetween. t

-I-Iaving described my inventionA What I claim as new and desire to secure by Letters Patent, is :v Y

' l. In a securingvmechanism for swinging closures, in combination, a plurality Aof se* curing bolts extending to differentA edges of the swinging closure, and mounted for projection for cooperation with closure jambs for securing 4said closure in closed position, a rotary shifter plate for said bolts mounted upon the closure intermediate the edges thereof, a pin and slot connection between each of 'said bolts and said shifter plate, the longitudinal axes of the slots of said pin and slot connections, yat the points of contact with the pins of' said connections, being substantially at right angles to the radii of said plate intersecting the respective pins when the bolts are in securing positions, an operating handle for said shifter plate and a pair of spring-pressed lugs cooperating with said handle and automatically aperative to hold said shifter plate and securing bolts in closure securing` position or in releasing position.

2. In'a securing mechanism forswinging closures, in combination, a plurality of securing bolts mounted upon the closure ,for longitudinal sliding movement thereon and extending to different edges of theclosure for projection into cooperative position with closure jambs for securingthe closure in closed position, transversely disposed lugs on said bolts having rectilinear elongated slots disposed substantially at right angles to the direction of bolt movement, a rotary shifter plate for said bolts, operating lugs mounted on said shifter plate and engaging respectively in said slots,. the longitudinal axes of said bolts aligning respectively with the radii of said plate passing through said f lugs when the bolts are proJected into se- 10 curing position, and automatic means for securing the shifter plate in position to hold. said bolt-s in securing or releasing position.

In testimony whereof I aiiix my signature.

WILLIAM E. H. BELL. 

